A discussion on vacuum polarization correction to the cross-section of $e^{+}{e}^{-}\to {\gamma }^{\ast }/\psi \to {\mu }^{+}{\mu }^{-}$

Hong-Dou Jin, Li-Peng Zhou, Bing-Xin Zhang +1

Vacuum polarization is a part of the initial-state radiative correction for the cross-section of $e^{+}{e}^{-}$ annihilation processes. In the energy region in the vicinity of narrow res…